Rule ID: SOL/252/1.2
This article describes how the Accessible Route Compliance Rule works and how you can configure the rule. The rule checks whether accessible routes in the model comply with accessibility requirements, including connectivity, minimum width, headroom clearance, and passing spaces.
The article covers the following topics:
The Accessible Route Compliance Rule ensures that designated routes in the model provide continuous, barrier‑free access between important locations such as entrances, core circulation, lifts, and accessible facilities. It verifies that routes meet the required clear width, headroom, and passing space criteria while accounting for obstacles that may block or narrow the path.
The rule supports compliance checks against international and local accessibility standards by allowing users to define which components form the accessible route, which components are obstacles, and which spaces act as start and end points or intermediate waypoints.
The rule first identifies candidate components that belong to the accessible route, such as spaces, ramps, doors, and civil elements or opening. It then checks connectivity between starting points, ending points, and accessible elevators, checking that each required pair of locations can be linked through at least one compliant route segment.
Along each connected route, the rule assesses:
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Clear route width and headroom against user‑defined minimum values.
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Whether door swings, walls, stairs, railings, columns, and other defined obstacles encroach into the accessible route.
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Presence, minimum width, and maximum spacing of passing spaces when this option is enabled.
If connectivity fails, or if any segment violates the configured clearance requirements, the rule creates issues showing where the route is too narrow, too low, obstructed, or missing passing spaces.
The Parameters view is divided into several sections.
Accessible route components
Use this section to define which components form the accessible route.
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You can include spaces, ramps, doors, civil elements... as part of the route network.
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Additional filters, such as space type or space group type, let you include or exclude specific groups of spaces from the accessible route definition.
Tip
If there is only an opening and no door, include the opening in the filter.
Choose obstacles
Specify which components are treated as obstacles that may block the accessible route.
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Typical obstacle types include walls, stairs, railings, and columns....
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You can further refine obstacles with properties such as bottom area, so that only components above a certain size are considered.
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Spaces can be explicitly excluded from the obstacle set when they are intended to remain part of the route.
Starting points
Define the starting points of the accessible route, such as key spaces, doors...
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If you select a space, the starting point of the route will be the center of that space.
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You can select start spaces by properties like GUID or name, or through classifications.
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These starting points act as origins for connectivity checks along the accessible route network.
Ending points
Define the ending points that routes must reach, for example lift lobbies, target rooms, or other key destinations.
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It shows the centre of the component you selected as the end point.
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You can include or exclude spaces based on name, GUID, or other properties to control exactly which endpoints must be connected.
Accessible elevators
Use this section to select elevator spaces that count as accessible vertical circulation along the route.
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Elevators are typically identified by space name or classification (for example, lift or elevator type values).
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Only the elevators included here are treated as valid accessible stops when checking connectivity between levels.
Route clearance and passing spaces
These parameters control geometric requirements along the accessible route.
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Consider door swing as obstacle: When enabled, door swings are subtracted from the accessible space and may reduce route width.
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Minimum accessible route width: Sets the minimum required clear width for the route.
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Minimum accessible route height: Sets the minimum headroom clearance along the route.
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Check for passing spaces along the route: When enabled, the rule searches for passing spaces along long corridors.
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Minimum passing space width: The minimum width required for passing spaces.
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Maximum distance between passing spaces: The maximum allowed distance between passing spaces along the route.
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When you run the rule, the results fall into these main categories:
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No accessible route found: There is no continuous accessible route between a selected starting point and ending point or elevator, so the connection is missing.
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Not enough clear width: One or more route segments or doors are narrower than the minimum accessible route width, and the issue highlights the location and measured width.
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Not enough headroom clearance: A door or space along the route does not meet the minimum headroom requirement, and the issue shows the measured clearance.
Use the Accessible Route Compliance Rule in scenarios such as:
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Verifying that an accessible route exists from parking areas or site entrances to building entrances, and from there to key spaces such as accessible toilets, retrofit bathrooms, or service cores.
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Checking that internal circulation—corridors, ramps, and connecting spaces—maintains the required width, headroom, and passing spaces under the selected standards.
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Identifying obstacles (walls, stairs, columns, door swings, or other elements) that break or narrow accessible routes between important spaces.